Test case issue [dimik Vowel Consonant]

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Please provide the information below:

1. Problem Link dimik-vowel-consonant:
2. Your concern, describe the issue:The testcase may contain not only lowercase or blank, but some strange character.
3. Your code or submission link 2498941:
4. Test case content:

The judger's testcase may be something like following
Input:

1 
aa bb1

Output

aa
bb1

But the right one is

aa
bb

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